QOS management method for an ethernet based ngn

Abstract

Provided is a quality of service (QoS) management method in an Ethernet-based next generation network (NGN) including a plurality of Ethernet virtual connections (EVCs). A bandwidth is allocated to each of a plurality of frames based on classes of service (CoSs), physical ports, service types, and Layer 2 (L2) / Layer 3 (L3) information.

Description

TECHNICAL FIELD[0001]The present invention relates to an Ethernet transport network for transmitting Ethernet frames, and more particularly, to a quality of service (QoS) management method in an Ethernet-based next generation network (NGN).[0002]The present invention is derived from a research project supported by the Information Technology (IT) Research & Development (R&D) program of the Ministry of Knowledge Economy (MKE) and the Institute for Information Technology Advancement (IITA) [2006-S-061-02, Development of Technology on an IPv6-based QoS service and a terminal mobility supporting router].BACKGROUND ART[0003]In a conventional Ethernet transport network, bandwidths are allocated and managed based on end customers of a virtual private network (VPN), or are differently allocated and managed according to virtual tunnels or priorities of virtual local area network (VLAN) tags. Thus, bandwidth allocation and quality of service (QoS) management may not be separately performed and...

AI Technical Summary

Benefits of technology

[0017]According to the present invention, when Ethernet frames are transmitted through a connection-oriented transport network, different bandwidths and different QoSs may be simultaneously provided to the Ethernet frames by sorting the Ethernet frames based on Ethernet flows and allocating bandwidths to the Ethernet frames. In more detail, according to the present invention, bandwidths may be efficiently allocated to Ethernet frames when the Ethernet frames are transmitted through EVCs in an Ethernet transport network. Furthermore, the Ethernet frames to which the bandwidths are allocated may be differently controlled according to a policy of an operator and thus different QoSs may be provided to the Ethernet frames.MODE OF THE INVENTION

[0018]Hereinafter, the present invention will be described in detail by explaining embodiments of the invention with reference to the attached drawings.

[0019]FIG. 2 is a block diagram of a connection-oriented Ethernet transport network 230 according to an embodiment of the present invention.

[0020]Referring to FIG. 2, end-customers compose different virtual private networks (VPNs). For example, the first and third end-customers 200 and 204 compose the VPN A, and the second and fourth end-customers 202 and 206 compose the VPN B. The VPNs A and B formed by the first through fourth end-customers 200, 202, 204, and 206 are connected to the connection-oriented Ethernet transport network 230 through first and second transport network interfaces 210 and 212. That is, the first transport network interface 210 sorts Ethernet frames input from an access network including the VPNs A and B, according to Ethernet flows, allocates bandwidths and qualities of service (QoSs) to the Ethernet frames, and transmits the Ethernet frames through the connection-oriented Ethernet transport network 230.

[0021]FIG. 3 is a flowchart illustrating a method of transmitting Ethernet frames through the connection-oriented Ethernet transport network 230 illustrated in FIG. 2, according to an embodiment of the present invention.

[0022]Referring to FIGS. 2 and 3, the first through fourth end-customers 200, 202, 204, and 206 included in an access network of the VPNs A and B access the connection-oriented Ethernet transport network 230 through the first and second transport network interfaces 210 and 212, and the first and second transport network interfaces 210 and 212 receive Ethernet frames from the first through fourth end-customers 200, 202, 204, and 206 of the access network, in operation S300.

Problems solved by technology

Since a conventional bandwidth allocation method allocates the bandwidths based on the priorities of the Ethernet frames, sufficient QoS may not be provided.

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